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DATE: December 21, 2022
REVISED:
NAME: Adding Subfields $0 and $1 to Field 658 of the MARC 21 Bibliographic Format
SOURCE: Den norske katalogkomité (The Norwegian Cataloguing Committee)
SUMMARY: This paper proposes adding subfields $0 (Authority record control number or standard number) and $1 (Real World Object URI) to field 658 (Index Term-Curriculum Objective) in the MARC 21 Bibliographic Format.
KEYWORDS: Field 658 (BD); Index Term-Curriculum Objective (BD); Subfield $0, in field 658 (BD); Authority record control number or standard number (BD); Subfield $1, in field 658 (BD); Real World Object URI (BD)
RELATED: 2017-8; 2019-03; 2020-FT02; 2020-FT03; 2021-04
STATUS/COMMENTS:
12/21/22 – Made available to the MARC community for discussion.
02/01/23 – Results of MARC Advisory Committee discussion: There was strong general support for the paper. In a straw poll, the committee voted in favor of processing the paper as a Fast-Track proposal. The paper was referred to the MARC Steering Group for final processing and approval as a Fast-Track proposal.
Much work has been done already to aid in capturing URIs in MARC authority and bibliographic records. Subfields $0 (Authority record control number or standard number) and $1 (Real World Object URI) have been added to numerous fields (see for example Marc Proposals No. 2017-08, 2019-03, 2020-FT02, 2020-FT03, 2021-04).
Unlike most other 6XX subject access fields, to which subfields $0 and $1 were added following the approval of MARC Proposal 2017-08, field 658 (Index Term - Curriculum Objective) does not yet support subfields $0 and $1, and it is therefore not possible to link curriculum objective subject entries to an RWO URI. In order to increase compatibility with linked data design principles, MARC records should be able to hold URIs where they are available.
The Norwegian Ministry of Education (UDIR) has established URIs for their national curriculum codes, and other educational bodies may soon follow suit. Adding subfield $1 to field 658 would allow MARC records to support the identifier and IRI recording methods for the subject element in the RDA Toolkit. This linkage would be of value especially in countries where more than one official language is used across catalogs, and it would also allow information valuable for selecting material such as subjects being superseded by other subjects or removed from the national curriculum.
We would also suggest that subfield $0 be defined, as other educational bodies may opt for non-URI identifiers for their standardized curriculums.
In field 658 (Index Term-Curriculum Objective) of the MARC 21 Bibliographic Format, define the following subfields:
$0 - Authority record control number or standard number (R)
See description of this subfield in Appendix A: Control Subfields.$1 - Real World Object URI (R)
See description of this subfield in Appendix A: Control Subfields.
Example 1
658 ## $a Matematikk 1P-Y BA $c MAT1111 $1 http://psi.udir.no/kl06/MAT1111 $2 udir
Example 2
658 ## $a Marken och växternas biologi $c BIGMAN0 $0(skv)BIGMAN0 $2 skv
Example 3
658 ## $a Engelsk, skriftlig $c ENG0012 $1 http://psi.udir.no/kl06/ENG0012 $2 udir
658 ## $a Engelsk, skriftleg $c ENG0012 $1 http://psi.udir.no/kl06/ENG0012 $2 udir
658 ## $a Eŋgelasgiella, čálalaš $c ENG0012 $1 http://psi.udir.no/kl06/ENG0012 $2 udir
658 ## $a English, written $c ENG0012 $1 http://psi.udir.no/kl06/ENG0012 $2 udir
Example 4
658 ## $a Grunnleggende norsk for språklige minoriteter, nivå 3, 1. årstrinn $c NOR0731 $1 http://psi.udir.no/kl06/NOR0731 $2udir
658 ## $a Grunnleggende norsk for språklige minoriteter, nivå 3, 2. årstrinn $c NOR0732 $1 http://psi.udir.no/kl06/NOR0732 $2udir
658 ## $a Grunnleggende norsk for språklige minoriteter, nivå 3, 3. årstrinn $c NOR0733 $1 http://psi.udir.no/kl06/NOR0733 $2udir
658 ## $a Grunnleggende norsk for språklige minoriteter, nivå 3, 4. årstrinn $c NOR0734 $1 http://psi.udir.no/kl06/NOR0734 $2udir
658 ## $a Grunnleggende norsk for språklige minoriteter, nivå 3, 5. årstrinn $c NOR0735 $1 http://psi.udir.no/kl06/NOR0735 $2udir
Example 5
500 ## $a Covers both MAT0010 and replacement course MAT0015
658 ## $a Matematikk 10. årstrinn $c MAT0010 $1 http://psi.udir.no/kl06/MAT0010 $2 udir
658 ## $a Matematikk 10. årstrinn $c MAT0015 $1 http://psi.udir.no/kl06/MAT0015 $2 udir
Example 6
500 ## $a Subject removed from national curriculum as of 2021-12-31, no direct replacement course
658 ## $a Technical Services $c TIP1002 $1 http://psi.udir.no/kl06/TIP1002 $2 udir
Adding $0 and $1 to 658 could reduce the data loss in BIBFRAME to MARC conversion.
6.1. Do you agree that it should be possible to associate curriculum objective subject entries with a linked data entity?
6.2. Does adding $1 to 658 provide a satisfactory way to make that association? If not, are there alternative approaches that should be considered?
6.3. Should $0 also be defined for non-URI identifiers?
6.4. Are there any potential consequences that this paper does not address?
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